mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-11-14 10:31:59 +00:00
974e8c63ea
add arch_send_reschedule_request, which is called by make_reschedule_request, for X86 arch_send_reschedule_request will call kick_pcpu, arch_send_reschedule_request is arch public API, which is needed to be implemented by each architecture. Tracked-On: #8812 Signed-off-by: Xue Bosheng <bosheng.xue@intel.com> Acked-by: Wang, Yu1 <yu1.wang@intel.com>
105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
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* Copyright (C) 2018-2025 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <types.h>
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#include <errno.h>
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#include <atomic.h>
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#include <bits.h>
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#include <asm/irq.h>
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#include <asm/cpu.h>
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#include <asm/per_cpu.h>
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#include <asm/lapic.h>
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#include <asm/guest/vm.h>
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#include <asm/guest/virq.h>
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#include <common/notify.h>
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#include <schedule.h>
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#include <irq.h>
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#include <logmsg.h>
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static uint32_t notification_irq = IRQ_INVALID;
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static int32_t request_notification_irq(irq_action_t func, void *data)
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{
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int32_t retval;
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if (notification_irq != IRQ_INVALID) {
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pr_info("%s, Notification vector already allocated on this CPU", __func__);
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retval = -EBUSY;
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} else {
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/* all cpu register the same notification vector */
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retval = request_irq(NOTIFY_VCPU_IRQ, func, data, IRQF_NONE);
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if (retval < 0) {
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pr_err("Failed to add notify isr");
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retval = -ENODEV;
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} else {
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notification_irq = (uint32_t)retval;
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}
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}
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return retval;
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}
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/*
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* @pre be called only by BSP initialization process
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*/
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static void setup_notification(void)
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{
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/* support IPI notification, Service VM will register all CPU */
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if (request_notification_irq(kick_notification, NULL) < 0) {
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pr_err("Failed to setup notification");
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}
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dev_dbg(DBG_LEVEL_PTIRQ, "NOTIFY: irq[%d] setup vector %x",
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notification_irq, irq_to_vector(notification_irq));
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}
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/*
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* posted interrupt handler
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* @pre (irq - POSTED_INTR_IRQ) < CONFIG_MAX_VM_NUM
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*/
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static void handle_pi_notification(uint32_t irq, __unused void *data)
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{
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uint32_t vcpu_index = irq - POSTED_INTR_IRQ;
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ASSERT(vcpu_index < CONFIG_MAX_VM_NUM, "");
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vcpu_handle_pi_notification(vcpu_index);
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}
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/*pre-condition: be called only by BSP initialization proccess*/
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static void setup_pi_notification(void)
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{
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uint32_t i;
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for (i = 0U; i < CONFIG_MAX_VM_NUM; i++) {
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if (request_irq(POSTED_INTR_IRQ + i, handle_pi_notification, NULL, IRQF_NONE) < 0) {
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pr_err("Failed to setup pi notification");
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break;
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}
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}
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}
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void arch_init_smp_call(void)
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{
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setup_notification();
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setup_pi_notification();
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}
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void arch_smp_call_kick_pcpu(uint16_t pcpu_id)
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{
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struct acrn_vcpu *vcpu = get_ever_run_vcpu(pcpu_id);
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if ((vcpu != NULL) && (is_lapic_pt_enabled(vcpu))) {
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vcpu_make_request(vcpu, ACRN_REQUEST_SMP_CALL);
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} else {
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send_single_ipi(pcpu_id, NOTIFY_VCPU_VECTOR);
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}
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}
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void arch_send_reschedule_request(uint16_t pcpu_id)
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{
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kick_pcpu(pcpu_id);
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}
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